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;doc: csv: amount decimal places: edits

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Simon Michael 2024-04-24 14:13:22 -10:00
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hledger/hledger.m4.md
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@ -3837,16 +3837,19 @@ that would trigger the prepending effect, which we don't want here.
When you are reading CSV data, eg with a command like `hledger -f foo.csv print`,
hledger will infer each commodity's decimal precision (and other [commodity display styles](#commodity-display-styles))
from the amounts - much as when reading a journal file without `commodity` directives (see the link).
But note these commodity styles are not inferred from the numbers in the original CSV data;
Note these commodity styles are not inferred from the numbers in the original CSV data;
rather, they are inferred from the amounts generated by the CSV rules.
When you are importing CSV data with the `import` command, eg `hledger import foo.csv`,
it's a little different: `import` [applies](#commodity-display-styles) the journal's existing commodity styles to the new entries.
So for each commodity, let's say for EUR, `import` will use:
there's another step: `import` tries to make the new entries [conform](#commodity-display-styles) to the journal's existing styles.
So for each commodity - let's say it's EUR - `import` will choose:
1. the style declared for EUR by a [`commodity` directive](#commodity-directive) in the journal
2. or if there's no such directive: the style inferred from EUR amounts in the journal
3. or if there are no EUR amounts in the journal: the style inferred from EUR amounts generated by the CSV rules.
1. the style declared for EUR by [a `commodity` directive](#commodity-directive) in the journal
2. otherwise, the style inferred from EUR amounts in the journal
3. otherwise, the style inferred from EUR amounts generated by the CSV rules.
TLDR: if `import` is not generating the precisions or styles you want, add a `commodity` directive specifying them.
### Referencing other fields